1200441225 has 24 divisors (see below), whose sum is σ = 2053172160. Its totient is φ = 618157120.

The previous prime is 1200441181. The next prime is 1200441227. The reversal of 1200441225 is 5221440021.

It is not a de Polignac number, because 1200441225 - 2¹⁰ = 1200440201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200441227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273789 + ... + 278138.

It is an arithmetic number, because the mean of its divisors is an integer number (85548840).

Almost surely, 2^1200441225 is an apocalyptic number.

1200441225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200441225 is a deficient number, since it is larger than the sum of its proper divisors (852730935).

1200441225 is a wasteful number, since it uses less digits than its factorization.

1200441225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551969 (or 551964 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1200441225 is about 34647.3841003906. The cubic root of 1200441225 is about 1062.7887953140.

Adding to 1200441225 its reverse (5221440021), we get a palindrome (6421881246).

The spelling of 1200441225 in words is "one billion, two hundred million, four hundred forty-one thousand, two hundred twenty-five".